* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
ul {
  list-style: none;
}
a {
  text-decoration: none;
  color: inherit;
}

.abs_container(@type:absolute){
  position: @type;
  left: 50%;
  top: 50%;
  transform: translate(-50%,-50%);
}

